Me : )) 15 points (chemistry)
define substance and give two examples of things that are substa...
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Chemistry, 23.06.2019 02:00
What causes the appearance of lines in a emission spectrum
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Chemistry, 23.06.2019 02:00
Butane gas reacts with oxygen gas to give carbon dioxide gas and water vapor (gas). if you mix butane and oxygen in the correct stoichiometric ratio, and if the total pressure of the mixture is 390 mmhg, what is the pressure (in mmhg) of water vapor after the reaction is completed (temperature and volume do not change).
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Chemistry, 23.06.2019 04:31
One student said that the investigation was not valid (a fair test). write a plan for the investigation that includes improvements to the method and apparatus
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